Across
- 2. the closest star in Earth
- 6. most stars are in a stage called the main _____
- 8. massive clouds of dust and gas which stars can form
- 10. the common fuel of stars
- 11. celestial object that orbit planets
- 12. the force that balance out the gas pressure in stars
Down
- 1. the reaction that stars perform to create energy
- 3. second brightest object in the night sky
- 4. a system of millions or billions of stars
- 5. what is temperature plot against in a HR diagram?
- 7. the farthest known planet from the Sun
- 9. the elliptical path of an object around a point in space